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Table 1 Validation of PE LBM in healthy adults from the Cytokine, Adiposity, Sarcopenia and Ageing (CASA) study cohort (n = 195) against DXA derived LBM in the validation cohort (n = 52)

From: Lean body mass: the development and validation of prediction equations in healthy adults

 

Mean (SD), kg

Mean error (95%CI), kg

P-value for mean error

R

ρ c(95% CI) [C b]

95% limits of agreement

RMSE (95% CI), kg

Total (n = 52)

       

LBM DXA

46.2 (9.49)

      

LBM PE1

48.1 (8.93)

1.88 ( 0.79, 2.97)

0.001

0.911*

0.891 (0.820, 0.935) [0.977]

-9.72, 5.96 (-20.7 to 12.6%)

4.32 (2.84, 5.80)

LBM PE2

47.9 (8.95)

1.69 (0.62, 2.75)

0.003

0.915*

0.899 (0.832, 0.940) [0.982]

-9.20, 5.83 (-19.9 to 12.6%)

4.15 (2.70, 5.60)

LBM PE3

47.7 (9.13)

1.50 (0.44 ,2.57)

0.006

0.917*

0.904 (0.840, 0.943) [0.986]

-8.99, 5.98 (-19.5 to 13.0%)

4.07 (2.63, 5.51)

LBM PE4

47.1 (8.96)

0.86 (-0.22, 1.94)

0.114

0.914*

0.908 (0.846, 0.946) [0.994]

-8.44, 6.72 (-18.3 to 14.6%)

3.93 (2.51, 5.35)

  1. *P-value <0.001, R = correlation, SD = Standard Deviation.
  2. RMSE = root mean squared prediction error, CI = confidence interval, R = Pearson Correlation Coefficient, Cb = Bias Correction Factor, ρc = Concordance Correlation Coefficient.